Pipe through --updater/--no-updater flag for flipper.exe (#4277)

Summary:
In our organization, Flipper is distributed in a version controlled way. As a result, we do not want users to manually update or receive prompts to update when a new version is available. There is already a `--updater` flag in the command line arguments for flipper.exe, but it isn't piped through. This change pipes it through and disables all update related UI when `--no-updater` is passed in.
## Changelog

Support --updater and --no-updater options for flipper.exe

Pull Request resolved: https://github.com/facebook/flipper/pull/4277

Test Plan: Ran `yarn build --win` in flipper/desktop, and launched flipper.exe from flipper/dist/win-unpacked with the `--updater`, `--no-updater` and no flags and ensured the proper behavior was observed (update UI shows by default or when `--updater` is specified, and doesn't show when `--no-updater` is specified).

Reviewed By: passy

Differential Revision: D41298321

Pulled By: mweststrate

fbshipit-source-id: 5ddfede2700954f0fdd6a111b20d0836fab25565

desktop/flipper-server-core/src/utils/__tests__/processConfig.node.tsx

@@ -18,6 +18,7 @@ test('config is decoded from env', () => {
       screenCapturePath: '/my/screenshot/path',
       launcherEnabled: false,
       suppressPluginUpdateNotifications: true,
+      updaterEnabled: true,
     }),
   });
 
@@ -28,6 +29,7 @@ test('config is decoded from env', () => {
     screenCapturePath: '/my/screenshot/path',
     launcherEnabled: false,
     suppressPluginUpdateNotifications: true,
+    updaterEnabled: true,
   });
 });
 
@@ -39,5 +41,6 @@ test('config is decoded from env with defaults', () => {
     screenCapturePath: undefined,
     launcherEnabled: true,
     suppressPluginUpdateNotifications: false,
+    updaterEnabled: true,
   });
 });

desktop/flipper-server-core/src/utils/processConfig.tsx

@@ -18,6 +18,8 @@ export function loadProcessConfig(env: NodeJS.ProcessEnv): ProcessConfig {
     screenCapturePath: json.screenCapturePath,
     launcherEnabled:
       typeof json.launcherEnabled === 'boolean' ? json.launcherEnabled : true,
+    updaterEnabled:
+      typeof json.updaterEnabled === 'boolean' ? json.updaterEnabled : true,
     suppressPluginUpdateNotifications:
       typeof json.suppressPluginUpdateNotifications === 'boolean'
         ? json.suppressPluginUpdateNotifications